Float-valve for water-tanks.



E. N. GAMPBELL.

FLOAT VALVE FOR WATER TANKS. APPLIGATIQN FILED Nomso, 190s.

940, 1 27. Patented Nov. 16, 1909.

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WITNESSE: mh'gwnvo, am fn/AAM, @6M 4f (YW/m? EY NW/763m f j Tm l EDWINN. CAMPBELL, OF COUNCIL BLUFFS, IOWA.

FLOAT-VALVE FOR WATER-TANKS.

Specification ofl Letters Patent.

Patented Nov. 16, 1909.

l'Application led November 30, 1908.V Serial No. 465,149.

To aZZ whom 'it may concern:

Be it known that I, EDWIN N. CAMPBELL,

a citizen of the United States, residing at Council Bluffs, in thecounty of Pottawattamie and State of Iowa, have invented a new anduseful Float-Valve for Tater- Tanks, of which the following is aspecilication.

My invention relates to improvements in float valves such as are used tomain-tain a level of water in tanks, and more especially for tanks usedfor watering` purposes,where there is a varying and uneven pressure onthe supply and where such float valves are in danger of being derangedor tampered with.

The objects of my invention are: first, to obtain a sliding motion of acut-off valve so that the pressure of the water to be stopped does notwork against the action of the float; second, to cut off the water fromthe supply and arrange the valve so that the float will press the valveclosely to its side and prevent leakage; third, to provide a valve whichdoes not easily clog or become leaky; and fourth, to provide a valvewhich will not be affected by a varying water pressure in the supply. Iattain these objects by the device and mechanism illustrated in theaccompanying drawing in which- Figure l is a cross-section of the valveand housing and a side elevation of the lever and float in diagram; Fig.2 is a cross-section a'nd plan of valve and lever; Fig. 3 is across-section of a modified form of the valve; and Fig. t is a sideelevation of the valve showing cross-section of lever.

Similar letters refer to similar parts throughout the several views.

In a housing or chamber o adapted to be attached to a pipe a is placed around or rotary valve o. The valve o has the ports p and g to correspondwith similar openings p and g respectively. Attached to the valve o is asuitable lever Z having a weighted end m. Attached to the lever Z is afloat f connected by any suitable means as the wire o. The valve o has aprojection e arranged to move between the limits of a slot or space CZin the housing of the valve o, and so arranged that when the ports p andg are not in line with the respective ports p and g, the valve ispressed down upon the port Q to cover the same. The valve o may have anysuitable form as that of the taper as shown in Fig. 3, and the nut n maybe used to draw and hold the valve o loosely in position in the housingc. i

'w in Fig. l indicates the waterdine at low level when the valve is openand y the lioat in the position occupied relative to the water-line fw.

Nhen water is admitted to the pipe anv it will flow as shown in Fig. lthrough the ports g, g', p and 22 into the space surrounding the valve,when the float f will gradually be lifted against the weight m of thelever Z closing the ports p and g until the lever Z moves to theposition Z when the ports p and Q will occupy the position indicated bydotted lines at p and el respectively. If the valve leaks sufficientlyfor the ports p and Q to pass beyond the edges of the ports p and grespectively the projection e will strike the limit of the slot Z andthe valve 'o will be thrown thereby and by the operation of the leverdown tightly upon the port g if there is any looseness in the valve,more effectively stopping off the water or liquid which is designed tobe fed into the space surrounding the valve. Upon the water beinglowered in the tank to the line 'w the ports p and g will again beopened and the water caused to rise again.

I do not desire to be limited by the shape or length or size of any ofthe parts and the depth of the water in the tank can be changed at willby lengthening or shortening the wire b.

I am aware that prior to my invention cut-off valves have been made foruse in connection with floats and levers to operate the sameautomatically, but

`What I claim is:

l. In a float valve, the combination of a tank, a supply pipe, a valvehousing receiving said supply pipe, the said valve housing having a portcommunicating with said supply pipe and a rotary valve adapted to openand close said port in said housing and a projection upon said valve atright angles to said port adapted to press the valve against the side ofthe chamber having the said port, and a weighted lever attached to theend of said valve and a float attached to said lever.

2. In a oat valve, the combination of a supply pipe, a valve housingreceiving said supply pipe, a port communicating with said supply pipein said housing, a second port, a rotary valve adapted to open and closeboth of said ports and a projection upon l as said projection and aioaty and connecsaid valve at right angles With the tiret tion engagingsaid Weighted lever.

named port, and said rojection arranved to strike the housing ofpsaidvalve Whei said EDWIN N' CAMPBELL' ports are closed by the rotation ofSaid Valve, Witnesses:

yand a Weighted lever attached to Saidrotary C. C. CLIFTON,

valve and extending in the Sarnedirection P.10.,ALLISHOUSE.

